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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS · 2025 · IF 4.9

Transparent super hydrophobic coating for coloured paper/cotton and transparent glass/ based on fluorinated epoxy polymer

Chengmin Hou,Wanting Jia,Mei Wang,Yabo Ren

Super hydrophobic surface is widely used in paper, cotton and other surfaces, but the high transparency color/colorless cotton/paper/glass with super hydrophobic effect has been less studied. In this paper, the polymer P(GMA- r -FOEMA) was synthesized with glycidyl methacrylate (GMA) and perfluorooctane ethyl methacrylate (FOEMA) as monomers by traditional free radical polymerization, and a very dilute solution was prepare. The transparent super hydrophobic coating was prepared by soaking glass, paper, and cotton in this polymer solution. The results show that the optimal parameters of the transparent super hydrophobic surface of glass, paper, and cotton fabric (SG, SP, and SC) are as follows: polymer concentration is 5 g/L, 2 g/L, and 20 g/L, soaking time is 30 min, drying temperature is 120 o C and drying time is 30 min, respectively. The water contact angles (WCA) of SG, SP, and SC are 151 o , 163 o and 168 o respectively, and the water rolling angles (WSA) are 17 o , 7 o , and 19 o respectively. The Gibbs free energy (GFE) of the modified glass, paper, and cotton surfaces was reduced by 146.27 dyne/cm, 37.19 dyne/cm, and 89.17 dyne/cm, respectively. The modified substrate surface has good self-cleaning, wettability, acid-alkali resistance, abrasion resistance, tape adhesion resistance, UV resistance, and durability. The SC surface and SP surface have an obvious silver mirror phenomenon, and have floating phenomenon. The light transmittance of the glass surface did not change after the super hydrophobic modification. SP can be used for oil-water separation. Overall, in this paper, we synthesized super hydrophobic substances by a simple and easy-to-use traditional free radical polymerisation method, and constructed a transparent hydrophobic surface by using the polymer solution directly, which reduces the operation steps and facilitates the industrial application of super hydrophobicity.Meanwhile, our synthesised super hydrophobic substances can be used on glass surfaces.

CAS / MDL: 865-49-6 446-36-6 110-54-3 75-76-3 7758-02-3 67-66-3

研究领域: 材料科学 · 化学工程

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OPTICS EXPRESS · 2024 ·Vol. 32 ·期 20 ·35321-35330 · IF 3.2

Rapid fabrication of superhydrophobic and transparent surfaces by using a laser-induced deep etching process

Yuchen Yin,Yuchen Yin,Yang Liao,Jijun Feng,Wenhai Gao,Wenhai Gao,Shaoming Xie,Cong Chen,Ke Liu,Rui Gao,Rui Gao,Yujie Peng,Yuxin Leng,Yuxin Leng

Superhydrophobic surfaces have garnered significant attention for their wide-ranging applications in self-cleaning, anti-icing, and liquid manipulation. However, it remains a daunting challenge to precisely and rapidly fabricate superhydrophobic microstructures with the desired layout. In this study, Polydimethylsiloxane (PDMS) microstructures were replicated from a laser-structured glass mold fabricated by laser-induced deep etching (LIDE). The deep microholes/grooves with the desired layouts and geometrics were rapidly fabricated into the glass mold by picosecond laser modification followed by wet etching. The well-arranged high-aspect-ratio micropillars/wall arrays were achieved on a PDMS surface by a subsequent soft lithography process. The influences of the aspect ratio and spacing of the micropillars on the hydrophobicity and transparency of the PDMS surface were investigated. Both good superhydrophobicity and high transparency can be simultaneously achieved by the use of optimized micropillar geometrics. Transmittance loss due to the presence of the high-aspect-ratio micropillars can be less than 1% over the wavelength region measured (300–1100 nm). Furthermore, to enhance the durability and robustness of the micropillars, protective interconnected microwalls were demonstrated without compromising hydrophobicity and transparency. This research opens up the possibility of rapid manufacturing of superhydrophobic and transparent surfaces with flexible layouts of microstructures.

研究领域: 材料科学 · 表面工程

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Transparent super hydrophobic coating for coloured paper/cotton and transparent glass/ based on fluorinated epoxy polymer

Rapid fabrication of superhydrophobic and transparent surfaces by using a laser-induced deep etching process